Seems like a few people want to know about the wireless connection so I will do my best.
I personally don't use wireless on my HTPC as it is hardwired via CAT5 to my network. I have the Zacate in my living room (see pic above) connected wirelessly with my wireless router in the garage.
I have never had any luck with streaming 1080p over my network with any of my equipment (LGA 775 Quad Core Desktop and C2D HTPC included) and this zacate is no exception. I have read that streaming 1080p is extremely difficult wirelessly and as I don't need to do this I really have limited experience. I was *almost* able to stream Avatar 1080p but had a little stuttering. This is similar to my experiences before in trying to stream HD video over a wireless network.
The actual internet connection though was superb. I was getting 1.1MB/sec which is the maximum allowed (well, that I pay for) by my ISP.
Video so far has been excellent and is equivalent to what I use on my HTPC (which isn't surprising since they are both basically an ATI 5450). I downloaded a short Pixar HD clip wirelessly from my HTPC and it played flawlessly. I also was able to play the Avatar 1080p youtube trailer without difficulty.
Sound was great. I loaded the default Shark007 codecs but didn't tweak them further as I will try to keep this as "default" as possible for dpmb.
CPU usage was at about 60% during HD playback and the temp was 47C.
For those interested the Windows Experience Index is:
Gaming Graphics: 5.9
Primary Hard Disk: 7.7
I think this is a very promising platform for those who was a low powered, low budget HTPC. I think it is very capable.
I have loaded all the codecs and mediabrowser but have not setup WMC or mediabrowser yet as I want dpmb to be able to do that from scratch from his system/setup.
Edit: I didn't test the bluetooth because with the exception of my DroidX I don't have any bluetooth equipment.
Edit: Windows OS SSD used 21.8GB after all of my installs and ALL of Win7 updates. Still have 33.9GB free for him to add any other software he wants.
Edit: Absolutely no issues so far with using 64bit OS.